Cleric Radiant Servant II
....you count as an additional 1 Level higher when channeling positive energy or light based spells.....

Positive Energy Aura
Allies within the aura are healed 1 hit point per 3 caster Levels

So, if you are level 14, the base healing from positive energy aura should be:

(14+1) /3 + 1 = 6?